Documentation
Everything you need to run money on Wrenbase
Help for customers, API reference for developers, and MCP tools for AI agents. One place to learn how invoicing, payments, and vendor workflows fit together.
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Customers
Help
Send invoices, accept payments, pay vendors, and set up Invoice Me. Written for the business owner, not an AP clerk.
Browse help →Developers
API
REST endpoints for invoices, contacts, and webhooks. A clean, versioned surface for building your own integrations.
View API →AI agents
MCP
Tool reference for the Wrenbase MCP server: parameters, schemas, and example invocations for agent integrations.
View MCP →Popular articles
Frequently asked questions
- What is Wrenbase?
- Wrenbase is a financial workflow platform for small businesses: invoicing, payments, vendor intake, and accounts payable without a dedicated AP team. Send invoices, get paid, pay vendors, and accept inbound bills through Invoice Me.
- How do I get started with Wrenbase?
- Sign up at app.wrenbase.com and send your first invoice from Revenue → Invoices. New accounts get 30 days of full access with no credit card required.
- Does Wrenbase have a public API?
- Yes. The Wrenbase REST API covers authentication, invoices, contacts, and webhooks. See the API section for endpoints, scopes, and examples.
- What is Invoice Me?
- Invoice Me is a branded link where your vendors can submit bills to your business. Only the vendors you've approved can submit, so the link is safe to share openly.
- How much does Wrenbase cost?
- Wrenbase charges $0 platform fee on payments, on every plan. New businesses start with a 30-day free trial of the full feature set, then move to the free plan automatically unless you choose a paid one. See Account and plans.